Vvitnesses



(No Medal.)

T. R. FER-BALL.

ANTI FRIUTIONAL BEARING.

N0.SZ1,351. Patented June 30, 1885.

INVENTUF njw-avd 1 the individual members of the other.

ing in contact with each other.

UNITED STATES Parent @rrrcn.

THOMAS It. FEERALL, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE BAGNALL 8:LOUD BLOCK COMPANY.

ANTI-FRICTIONAL BEARING.

CPIZGIFICATIOI-l' xorming part of Letters Patent No. 321.351, June 30.1885.

Application filed May 22, 1885. (So model.)

10 This invention relates to improvements in anti-frictional bearings ofthat kind in which two sets of rollers are used, one set varying in sizefrom the other set, and the individual members of one set arrangedalternately with In this kind of anti-frictional bearings the usualringshaped regulators or dividers are dispensed with, the set of smallerrollers serving as dividers to prevent the larger rollers from com- 111this antifrictional bearing the larger set of rollers lie in contactwith the interior cylindrical surface of the outer shell, as well aswith the exterior cylindrical surface of the central sleeve, hub,

or shaft; but the smaller set of rollers are prevented from touchingsuch surfaces, and only come in contact with the larger set of rollers.

For the purposes of keeping the rollers in place within the shell, Iprovide the interior o portion of one end of the latter with an annulargroove, in which is laid an expansive split ring, as will hereinafter bemore fully shown and described, reference being had to the accompanyingdrawings, where- 5 Figure 1 represents an end view of my improvedanti-frictional bearing, in which the smaller set of rollers areprovided with reduced journal ends for their guidance. Fig. 2 representsa central longitudinal section on 40 the line A 13, shown in Fig. l, andFig. 3 represents a cross-section of the hearing and rollers shown inFig. 1. Fig. 4 represents an end View of a modified form of my improvedbearing in which the reduced journal ends on the smaller set of rollersare dispensed with. Fig.

5 represents alongitudinal section on the lines 0 D, shown in Fig. at,and Fig. 6 represents a cross-section of the bearing and rollers shownin Fig. 4:.

Similar letters refer to similar parts wherever they occur on thedifferent parts of the drawings.

In Figs. 1, 2,. and 3, n represents a cylindrical shell, as usual madeopen in one end, and provided in the other end with aninwardlyprojecting annular flange, c, as shown. The open end of shell ais provided with an annular groove or recess, a", in which is laid theexpansive split spring-ring b after the two sets of rollers and centralbearing-sleeve are put in place within said shell on.

\lithin the shell a is concentrically located the bearing sleeve or hub0, having annular flanges c c in its ends, as shown in Figs. 1 and 2.

In the annular space between the exterior of sleeve or hub c and theinterior of shell o are located the two sets of rollers d and e, theformer being the largest, and serve as antifriotional rollers, and areadapted to roll on interior of shell a, as well as on the exterior ofsleeve or hub c, as shown in Fig. 3, and said anti-frictional rollers 01are prevented from a longitudinal motion by being loosely confinedbetween the flanges c c on sleeve 0, as well as between flange a andspring-ring b on the shell a, as shown in Fig. 2. The smaller set ofrollers, e e, are arranged alternately between the larger rollers, d d,as shown, in such a manner as not to come in contact with the interiorof shell a and exterior of sleeve or hub c, and only serve as regulatorsbetween the anti-frictional rollers d d,to keep each one of the latterin its proper relative position to the next one in the series, as shown.To retain the regulator-rolls e c in such position between the rollers dd, I provide the ends of the regulatorrolls 6 c with reduced cylindricalprojections c 6, (shown in Figs. 1 and 2,) which are loosely guided inone end in the annular open space between interior shell-flange, a, andsleeve or hub flange c, and in the other end in the annular open spacebetween the spring-ring b and sleeve or hub-flange c, as shown in Fig.2. The regulator-rolls c e are prevented from a longitudinal motion bybeing loosely confined between the sleeve or hub flanges c c, interiorshell-flange, a, and spring-ring b, as shown in Fig. 2. By thisarrangement the rollers (l and e are properly confined within the shella,

ICO

and between it and the sleeve or hub c c c, in such a manner that onlythe rollers d d will touch and roll on the interior cylindrical surfaceof shell a and exterior cylindrical surface of bearing sleeve or hub c,the rollers e 0 being held from contact with such cylindrical surfacesof shell a and sleeve or hub c, and are only permitted to touch and rollagainst the anti-frictional rollers d d, as described and shown.

The modification of my invention shown in Figs. 4, 5, and 6 ispreciselylike the one above described, with this dilference,that Idispense with the reduced cylindrical projections on the ends ofregulator-rolls e e, and make them of an even size throughout theirlengths, as shown in Fig. 5, and make them a little longer than theanti-frictional rollers (1 cl. In this modification I make annularrecesses c c on the in terior surfaces of the bearing-sleeve orhubilanges c c, as shown in Fig. 5, in which the ends of rollers e 0project, and are so guided as not to move toward the center of thebearing. The rollers e e in this modification are prevented from movingtoo far outward by coming in contact in one end with sleeve-flange a,and in the other with spring-ring b, as shown in Fig. 5.

Having thus fully described the nature, construction, and operation ofmy invention, I wish to secure by Letters Patent, and claim 1. Theherein-described anti-friction device,

consisting of two sets of rollers, d and e, located within the annularspace between the shell a and flanged sleeve or hub cc, thelargerrollers, d, bearing against the shell and sleeve, and the smallerrollers, 6, located alternately between the larger rollers withouttouching the shell and sleeve, the whole system of rollers beingretained within the shell a by means of flange a in one end andexpansive springring b in the other, as set forth.

2. In an anti-frictional bearing, the shell a, with its end flange, a,and spring-ring b, as described, the flanged hub or sleeve 0 c 0,combined with two sets of rollers, (Z and e, the latter serving asregulators for holding the former at a proper distance apart,and havingreduced journal ends 6 e, as and for the purpose set forth.

3. In an anti-frictional bearing, the shell a, with its end flange, a,and spring-ring b, as described, the flanged hub or sleeve 0 c c, havinginterior annular recesses, c 0, combined with the anti-friction rollers(Z d and regulatorrolls 6 6, all arranged in a manner and for thepurpose as set forth.

In testimony whereofI have affixed my signature in presence of twowitnesses.

THOMAS R. FERRALL.

Witnesses:

ALBAN ANDREN, HERBERT LoUD.

